ccchecker/cc.php at main · iudf662/ccchecker · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
<?php
 if (isset($_POST['submitbutton'])) {

    $number= $_POST['number_entered'];

    if (validatecard($number) !== false) {
        echo "<green> $type detected. credit card number is valid</green>";
    }else{
        echo " <red>This credit card number is invalid</red>";
        }

    validatecard($number);
 }

// $submitbutton= $_POST['submitbutton'];


function validatecard($number)
 {
    global $type;

    $cardtype = array(
        "visa"       => "/^4[0-9]{12}(?:[0-9]{3})?$/",
        "mastercard" => "/^5[1-5][0-9]{14}$/",
        "amex"       => "/^3[47][0-9]{13}$/",
        "discover"   => "/^6(?:011|5[0-9]{2})[0-9]{12}$/",
    );

    if (preg_match($cardtype['visa'],$number))
    {
	$type= "visa";
        return 'visa';

    }
    else if (preg_match($cardtype['mastercard'],$number))
    {
	$type= "mastercard";
        return 'mastercard';
    }
    else if (preg_match($cardtype['amex'],$number))
    {
	$type= "amex";
        return 'amex';

    }
    else if (preg_match($cardtype['discover'],$number))
    {
	$type= "discover";
        return 'discover';
    }
    else
    {
        return false;
    }
 }


?>

<form action="" method="POST">

Credit card number:<input type="text" name="number_entered" />
<?php
// if ($submitbutton)
// {

// }
?>

<br><br>

<input type="submit" value="Submit" name="submitbutton"/>

</form>